1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "Surface"
18 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
19 //#define LOG_NDEBUG 0
20
21 #include <android/native_window.h>
22
23 #include <binder/Parcel.h>
24
25 #include <utils/Log.h>
26 #include <utils/Trace.h>
27
28 #include <ui/Fence.h>
29
30 #include <gui/ISurfaceComposer.h>
31 #include <gui/SurfaceComposerClient.h>
32 #include <gui/GLConsumer.h>
33 #include <gui/Surface.h>
34
35 #include <private/gui/ComposerService.h>
36
37 namespace android {
38
Surface(const sp<IGraphicBufferProducer> & bufferProducer,bool controlledByApp)39 Surface::Surface(
40 const sp<IGraphicBufferProducer>& bufferProducer,
41 bool controlledByApp)
42 : mGraphicBufferProducer(bufferProducer)
43 {
44 // Initialize the ANativeWindow function pointers.
45 ANativeWindow::setSwapInterval = hook_setSwapInterval;
46 ANativeWindow::dequeueBuffer = hook_dequeueBuffer;
47 ANativeWindow::cancelBuffer = hook_cancelBuffer;
48 ANativeWindow::queueBuffer = hook_queueBuffer;
49 ANativeWindow::query = hook_query;
50 ANativeWindow::perform = hook_perform;
51
52 ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
53 ANativeWindow::cancelBuffer_DEPRECATED = hook_cancelBuffer_DEPRECATED;
54 ANativeWindow::lockBuffer_DEPRECATED = hook_lockBuffer_DEPRECATED;
55 ANativeWindow::queueBuffer_DEPRECATED = hook_queueBuffer_DEPRECATED;
56
57 const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
58 const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
59
60 mReqWidth = 0;
61 mReqHeight = 0;
62 mReqFormat = 0;
63 mReqUsage = 0;
64 mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
65 mCrop.clear();
66 mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
67 mTransform = 0;
68 mDefaultWidth = 0;
69 mDefaultHeight = 0;
70 mUserWidth = 0;
71 mUserHeight = 0;
72 mTransformHint = 0;
73 mConsumerRunningBehind = false;
74 mConnectedToCpu = false;
75 mProducerControlledByApp = controlledByApp;
76 mSwapIntervalZero = false;
77 }
78
~Surface()79 Surface::~Surface() {
80 if (mConnectedToCpu) {
81 Surface::disconnect(NATIVE_WINDOW_API_CPU);
82 }
83 }
84
getIGraphicBufferProducer() const85 sp<IGraphicBufferProducer> Surface::getIGraphicBufferProducer() const {
86 return mGraphicBufferProducer;
87 }
88
hook_setSwapInterval(ANativeWindow * window,int interval)89 int Surface::hook_setSwapInterval(ANativeWindow* window, int interval) {
90 Surface* c = getSelf(window);
91 return c->setSwapInterval(interval);
92 }
93
hook_dequeueBuffer(ANativeWindow * window,ANativeWindowBuffer ** buffer,int * fenceFd)94 int Surface::hook_dequeueBuffer(ANativeWindow* window,
95 ANativeWindowBuffer** buffer, int* fenceFd) {
96 Surface* c = getSelf(window);
97 return c->dequeueBuffer(buffer, fenceFd);
98 }
99
hook_cancelBuffer(ANativeWindow * window,ANativeWindowBuffer * buffer,int fenceFd)100 int Surface::hook_cancelBuffer(ANativeWindow* window,
101 ANativeWindowBuffer* buffer, int fenceFd) {
102 Surface* c = getSelf(window);
103 return c->cancelBuffer(buffer, fenceFd);
104 }
105
hook_queueBuffer(ANativeWindow * window,ANativeWindowBuffer * buffer,int fenceFd)106 int Surface::hook_queueBuffer(ANativeWindow* window,
107 ANativeWindowBuffer* buffer, int fenceFd) {
108 Surface* c = getSelf(window);
109 return c->queueBuffer(buffer, fenceFd);
110 }
111
hook_dequeueBuffer_DEPRECATED(ANativeWindow * window,ANativeWindowBuffer ** buffer)112 int Surface::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
113 ANativeWindowBuffer** buffer) {
114 Surface* c = getSelf(window);
115 ANativeWindowBuffer* buf;
116 int fenceFd = -1;
117 int result = c->dequeueBuffer(&buf, &fenceFd);
118 sp<Fence> fence(new Fence(fenceFd));
119 int waitResult = fence->waitForever("dequeueBuffer_DEPRECATED");
120 if (waitResult != OK) {
121 ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an error: %d",
122 waitResult);
123 c->cancelBuffer(buf, -1);
124 return waitResult;
125 }
126 *buffer = buf;
127 return result;
128 }
129
hook_cancelBuffer_DEPRECATED(ANativeWindow * window,ANativeWindowBuffer * buffer)130 int Surface::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
131 ANativeWindowBuffer* buffer) {
132 Surface* c = getSelf(window);
133 return c->cancelBuffer(buffer, -1);
134 }
135
hook_lockBuffer_DEPRECATED(ANativeWindow * window,ANativeWindowBuffer * buffer)136 int Surface::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
137 ANativeWindowBuffer* buffer) {
138 Surface* c = getSelf(window);
139 return c->lockBuffer_DEPRECATED(buffer);
140 }
141
hook_queueBuffer_DEPRECATED(ANativeWindow * window,ANativeWindowBuffer * buffer)142 int Surface::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
143 ANativeWindowBuffer* buffer) {
144 Surface* c = getSelf(window);
145 return c->queueBuffer(buffer, -1);
146 }
147
hook_query(const ANativeWindow * window,int what,int * value)148 int Surface::hook_query(const ANativeWindow* window,
149 int what, int* value) {
150 const Surface* c = getSelf(window);
151 return c->query(what, value);
152 }
153
hook_perform(ANativeWindow * window,int operation,...)154 int Surface::hook_perform(ANativeWindow* window, int operation, ...) {
155 va_list args;
156 va_start(args, operation);
157 Surface* c = getSelf(window);
158 return c->perform(operation, args);
159 }
160
setSwapInterval(int interval)161 int Surface::setSwapInterval(int interval) {
162 ATRACE_CALL();
163 // EGL specification states:
164 // interval is silently clamped to minimum and maximum implementation
165 // dependent values before being stored.
166
167 if (interval < minSwapInterval)
168 interval = minSwapInterval;
169
170 if (interval > maxSwapInterval)
171 interval = maxSwapInterval;
172
173 mSwapIntervalZero = (interval == 0);
174
175 return NO_ERROR;
176 }
177
dequeueBuffer(android_native_buffer_t ** buffer,int * fenceFd)178 int Surface::dequeueBuffer(android_native_buffer_t** buffer, int* fenceFd) {
179 ATRACE_CALL();
180 ALOGV("Surface::dequeueBuffer");
181 Mutex::Autolock lock(mMutex);
182 int buf = -1;
183 int reqW = mReqWidth ? mReqWidth : mUserWidth;
184 int reqH = mReqHeight ? mReqHeight : mUserHeight;
185 sp<Fence> fence;
186 status_t result = mGraphicBufferProducer->dequeueBuffer(&buf, &fence, mSwapIntervalZero,
187 reqW, reqH, mReqFormat, mReqUsage);
188 if (result < 0) {
189 ALOGV("dequeueBuffer: IGraphicBufferProducer::dequeueBuffer(%d, %d, %d, %d)"
190 "failed: %d", mReqWidth, mReqHeight, mReqFormat, mReqUsage,
191 result);
192 return result;
193 }
194 sp<GraphicBuffer>& gbuf(mSlots[buf].buffer);
195
196 // this should never happen
197 ALOGE_IF(fence == NULL, "Surface::dequeueBuffer: received null Fence! buf=%d", buf);
198
199 if (result & IGraphicBufferProducer::RELEASE_ALL_BUFFERS) {
200 freeAllBuffers();
201 }
202
203 if ((result & IGraphicBufferProducer::BUFFER_NEEDS_REALLOCATION) || gbuf == 0) {
204 result = mGraphicBufferProducer->requestBuffer(buf, &gbuf);
205 if (result != NO_ERROR) {
206 ALOGE("dequeueBuffer: IGraphicBufferProducer::requestBuffer failed: %d", result);
207 return result;
208 }
209 }
210
211 if (fence->isValid()) {
212 *fenceFd = fence->dup();
213 if (*fenceFd == -1) {
214 ALOGE("dequeueBuffer: error duping fence: %d", errno);
215 // dup() should never fail; something is badly wrong. Soldier on
216 // and hope for the best; the worst that should happen is some
217 // visible corruption that lasts until the next frame.
218 }
219 } else {
220 *fenceFd = -1;
221 }
222
223 *buffer = gbuf.get();
224 return OK;
225 }
226
cancelBuffer(android_native_buffer_t * buffer,int fenceFd)227 int Surface::cancelBuffer(android_native_buffer_t* buffer,
228 int fenceFd) {
229 ATRACE_CALL();
230 ALOGV("Surface::cancelBuffer");
231 Mutex::Autolock lock(mMutex);
232 int i = getSlotFromBufferLocked(buffer);
233 if (i < 0) {
234 return i;
235 }
236 sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
237 mGraphicBufferProducer->cancelBuffer(i, fence);
238 return OK;
239 }
240
getSlotFromBufferLocked(android_native_buffer_t * buffer) const241 int Surface::getSlotFromBufferLocked(
242 android_native_buffer_t* buffer) const {
243 bool dumpedState = false;
244 for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
245 if (mSlots[i].buffer != NULL &&
246 mSlots[i].buffer->handle == buffer->handle) {
247 return i;
248 }
249 }
250 ALOGE("getSlotFromBufferLocked: unknown buffer: %p", buffer->handle);
251 return BAD_VALUE;
252 }
253
lockBuffer_DEPRECATED(android_native_buffer_t * buffer)254 int Surface::lockBuffer_DEPRECATED(android_native_buffer_t* buffer) {
255 ALOGV("Surface::lockBuffer");
256 Mutex::Autolock lock(mMutex);
257 return OK;
258 }
259
queueBuffer(android_native_buffer_t * buffer,int fenceFd)260 int Surface::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
261 ATRACE_CALL();
262 ALOGV("Surface::queueBuffer");
263 Mutex::Autolock lock(mMutex);
264 int64_t timestamp;
265 bool isAutoTimestamp = false;
266 if (mTimestamp == NATIVE_WINDOW_TIMESTAMP_AUTO) {
267 timestamp = systemTime(SYSTEM_TIME_MONOTONIC);
268 isAutoTimestamp = true;
269 ALOGV("Surface::queueBuffer making up timestamp: %.2f ms",
270 timestamp / 1000000.f);
271 } else {
272 timestamp = mTimestamp;
273 }
274 int i = getSlotFromBufferLocked(buffer);
275 if (i < 0) {
276 return i;
277 }
278
279
280 // Make sure the crop rectangle is entirely inside the buffer.
281 Rect crop;
282 mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
283
284 sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : Fence::NO_FENCE);
285 IGraphicBufferProducer::QueueBufferOutput output;
286 IGraphicBufferProducer::QueueBufferInput input(timestamp, isAutoTimestamp,
287 crop, mScalingMode, mTransform, mSwapIntervalZero, fence);
288 status_t err = mGraphicBufferProducer->queueBuffer(i, input, &output);
289 if (err != OK) {
290 ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
291 }
292 uint32_t numPendingBuffers = 0;
293 output.deflate(&mDefaultWidth, &mDefaultHeight, &mTransformHint,
294 &numPendingBuffers);
295
296 mConsumerRunningBehind = (numPendingBuffers >= 2);
297
298 return err;
299 }
300
query(int what,int * value) const301 int Surface::query(int what, int* value) const {
302 ATRACE_CALL();
303 ALOGV("Surface::query");
304 { // scope for the lock
305 Mutex::Autolock lock(mMutex);
306 switch (what) {
307 case NATIVE_WINDOW_FORMAT:
308 if (mReqFormat) {
309 *value = mReqFormat;
310 return NO_ERROR;
311 }
312 break;
313 case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER: {
314 sp<ISurfaceComposer> composer(
315 ComposerService::getComposerService());
316 if (composer->authenticateSurfaceTexture(mGraphicBufferProducer)) {
317 *value = 1;
318 } else {
319 *value = 0;
320 }
321 return NO_ERROR;
322 }
323 case NATIVE_WINDOW_CONCRETE_TYPE:
324 *value = NATIVE_WINDOW_SURFACE;
325 return NO_ERROR;
326 case NATIVE_WINDOW_DEFAULT_WIDTH:
327 *value = mUserWidth ? mUserWidth : mDefaultWidth;
328 return NO_ERROR;
329 case NATIVE_WINDOW_DEFAULT_HEIGHT:
330 *value = mUserHeight ? mUserHeight : mDefaultHeight;
331 return NO_ERROR;
332 case NATIVE_WINDOW_TRANSFORM_HINT:
333 *value = mTransformHint;
334 return NO_ERROR;
335 case NATIVE_WINDOW_CONSUMER_RUNNING_BEHIND: {
336 status_t err = NO_ERROR;
337 if (!mConsumerRunningBehind) {
338 *value = 0;
339 } else {
340 err = mGraphicBufferProducer->query(what, value);
341 if (err == NO_ERROR) {
342 mConsumerRunningBehind = *value;
343 }
344 }
345 return err;
346 }
347 }
348 }
349 return mGraphicBufferProducer->query(what, value);
350 }
351
perform(int operation,va_list args)352 int Surface::perform(int operation, va_list args)
353 {
354 int res = NO_ERROR;
355 switch (operation) {
356 case NATIVE_WINDOW_CONNECT:
357 // deprecated. must return NO_ERROR.
358 break;
359 case NATIVE_WINDOW_DISCONNECT:
360 // deprecated. must return NO_ERROR.
361 break;
362 case NATIVE_WINDOW_SET_USAGE:
363 res = dispatchSetUsage(args);
364 break;
365 case NATIVE_WINDOW_SET_CROP:
366 res = dispatchSetCrop(args);
367 break;
368 case NATIVE_WINDOW_SET_BUFFER_COUNT:
369 res = dispatchSetBufferCount(args);
370 break;
371 case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
372 res = dispatchSetBuffersGeometry(args);
373 break;
374 case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
375 res = dispatchSetBuffersTransform(args);
376 break;
377 case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
378 res = dispatchSetBuffersTimestamp(args);
379 break;
380 case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
381 res = dispatchSetBuffersDimensions(args);
382 break;
383 case NATIVE_WINDOW_SET_BUFFERS_USER_DIMENSIONS:
384 res = dispatchSetBuffersUserDimensions(args);
385 break;
386 case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
387 res = dispatchSetBuffersFormat(args);
388 break;
389 case NATIVE_WINDOW_LOCK:
390 res = dispatchLock(args);
391 break;
392 case NATIVE_WINDOW_UNLOCK_AND_POST:
393 res = dispatchUnlockAndPost(args);
394 break;
395 case NATIVE_WINDOW_SET_SCALING_MODE:
396 res = dispatchSetScalingMode(args);
397 break;
398 case NATIVE_WINDOW_API_CONNECT:
399 res = dispatchConnect(args);
400 break;
401 case NATIVE_WINDOW_API_DISCONNECT:
402 res = dispatchDisconnect(args);
403 break;
404 default:
405 res = NAME_NOT_FOUND;
406 break;
407 }
408 return res;
409 }
410
dispatchConnect(va_list args)411 int Surface::dispatchConnect(va_list args) {
412 int api = va_arg(args, int);
413 return connect(api);
414 }
415
dispatchDisconnect(va_list args)416 int Surface::dispatchDisconnect(va_list args) {
417 int api = va_arg(args, int);
418 return disconnect(api);
419 }
420
dispatchSetUsage(va_list args)421 int Surface::dispatchSetUsage(va_list args) {
422 int usage = va_arg(args, int);
423 return setUsage(usage);
424 }
425
dispatchSetCrop(va_list args)426 int Surface::dispatchSetCrop(va_list args) {
427 android_native_rect_t const* rect = va_arg(args, android_native_rect_t*);
428 return setCrop(reinterpret_cast<Rect const*>(rect));
429 }
430
dispatchSetBufferCount(va_list args)431 int Surface::dispatchSetBufferCount(va_list args) {
432 size_t bufferCount = va_arg(args, size_t);
433 return setBufferCount(bufferCount);
434 }
435
dispatchSetBuffersGeometry(va_list args)436 int Surface::dispatchSetBuffersGeometry(va_list args) {
437 int w = va_arg(args, int);
438 int h = va_arg(args, int);
439 int f = va_arg(args, int);
440 int err = setBuffersDimensions(w, h);
441 if (err != 0) {
442 return err;
443 }
444 return setBuffersFormat(f);
445 }
446
dispatchSetBuffersDimensions(va_list args)447 int Surface::dispatchSetBuffersDimensions(va_list args) {
448 int w = va_arg(args, int);
449 int h = va_arg(args, int);
450 return setBuffersDimensions(w, h);
451 }
452
dispatchSetBuffersUserDimensions(va_list args)453 int Surface::dispatchSetBuffersUserDimensions(va_list args) {
454 int w = va_arg(args, int);
455 int h = va_arg(args, int);
456 return setBuffersUserDimensions(w, h);
457 }
458
dispatchSetBuffersFormat(va_list args)459 int Surface::dispatchSetBuffersFormat(va_list args) {
460 int f = va_arg(args, int);
461 return setBuffersFormat(f);
462 }
463
dispatchSetScalingMode(va_list args)464 int Surface::dispatchSetScalingMode(va_list args) {
465 int m = va_arg(args, int);
466 return setScalingMode(m);
467 }
468
dispatchSetBuffersTransform(va_list args)469 int Surface::dispatchSetBuffersTransform(va_list args) {
470 int transform = va_arg(args, int);
471 return setBuffersTransform(transform);
472 }
473
dispatchSetBuffersTimestamp(va_list args)474 int Surface::dispatchSetBuffersTimestamp(va_list args) {
475 int64_t timestamp = va_arg(args, int64_t);
476 return setBuffersTimestamp(timestamp);
477 }
478
dispatchLock(va_list args)479 int Surface::dispatchLock(va_list args) {
480 ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
481 ARect* inOutDirtyBounds = va_arg(args, ARect*);
482 return lock(outBuffer, inOutDirtyBounds);
483 }
484
dispatchUnlockAndPost(va_list args)485 int Surface::dispatchUnlockAndPost(va_list args) {
486 return unlockAndPost();
487 }
488
489
connect(int api)490 int Surface::connect(int api) {
491 ATRACE_CALL();
492 ALOGV("Surface::connect");
493 static sp<BBinder> sLife = new BBinder();
494 Mutex::Autolock lock(mMutex);
495 IGraphicBufferProducer::QueueBufferOutput output;
496 int err = mGraphicBufferProducer->connect(sLife, api, mProducerControlledByApp, &output);
497 if (err == NO_ERROR) {
498 uint32_t numPendingBuffers = 0;
499 output.deflate(&mDefaultWidth, &mDefaultHeight, &mTransformHint,
500 &numPendingBuffers);
501 mConsumerRunningBehind = (numPendingBuffers >= 2);
502 }
503 if (!err && api == NATIVE_WINDOW_API_CPU) {
504 mConnectedToCpu = true;
505 }
506 return err;
507 }
508
509
disconnect(int api)510 int Surface::disconnect(int api) {
511 ATRACE_CALL();
512 ALOGV("Surface::disconnect");
513 Mutex::Autolock lock(mMutex);
514 freeAllBuffers();
515 int err = mGraphicBufferProducer->disconnect(api);
516 if (!err) {
517 mReqFormat = 0;
518 mReqWidth = 0;
519 mReqHeight = 0;
520 mReqUsage = 0;
521 mCrop.clear();
522 mScalingMode = NATIVE_WINDOW_SCALING_MODE_FREEZE;
523 mTransform = 0;
524 if (api == NATIVE_WINDOW_API_CPU) {
525 mConnectedToCpu = false;
526 }
527 }
528 return err;
529 }
530
setUsage(uint32_t reqUsage)531 int Surface::setUsage(uint32_t reqUsage)
532 {
533 ALOGV("Surface::setUsage");
534 Mutex::Autolock lock(mMutex);
535 mReqUsage = reqUsage;
536 return OK;
537 }
538
setCrop(Rect const * rect)539 int Surface::setCrop(Rect const* rect)
540 {
541 ATRACE_CALL();
542
543 Rect realRect;
544 if (rect == NULL || rect->isEmpty()) {
545 realRect.clear();
546 } else {
547 realRect = *rect;
548 }
549
550 ALOGV("Surface::setCrop rect=[%d %d %d %d]",
551 realRect.left, realRect.top, realRect.right, realRect.bottom);
552
553 Mutex::Autolock lock(mMutex);
554 mCrop = realRect;
555 return NO_ERROR;
556 }
557
setBufferCount(int bufferCount)558 int Surface::setBufferCount(int bufferCount)
559 {
560 ATRACE_CALL();
561 ALOGV("Surface::setBufferCount");
562 Mutex::Autolock lock(mMutex);
563
564 status_t err = mGraphicBufferProducer->setBufferCount(bufferCount);
565 ALOGE_IF(err, "IGraphicBufferProducer::setBufferCount(%d) returned %s",
566 bufferCount, strerror(-err));
567
568 if (err == NO_ERROR) {
569 freeAllBuffers();
570 }
571
572 return err;
573 }
574
setBuffersDimensions(int w,int h)575 int Surface::setBuffersDimensions(int w, int h)
576 {
577 ATRACE_CALL();
578 ALOGV("Surface::setBuffersDimensions");
579
580 if (w<0 || h<0)
581 return BAD_VALUE;
582
583 if ((w && !h) || (!w && h))
584 return BAD_VALUE;
585
586 Mutex::Autolock lock(mMutex);
587 mReqWidth = w;
588 mReqHeight = h;
589 return NO_ERROR;
590 }
591
setBuffersUserDimensions(int w,int h)592 int Surface::setBuffersUserDimensions(int w, int h)
593 {
594 ATRACE_CALL();
595 ALOGV("Surface::setBuffersUserDimensions");
596
597 if (w<0 || h<0)
598 return BAD_VALUE;
599
600 if ((w && !h) || (!w && h))
601 return BAD_VALUE;
602
603 Mutex::Autolock lock(mMutex);
604 mUserWidth = w;
605 mUserHeight = h;
606 return NO_ERROR;
607 }
608
setBuffersFormat(int format)609 int Surface::setBuffersFormat(int format)
610 {
611 ALOGV("Surface::setBuffersFormat");
612
613 if (format<0)
614 return BAD_VALUE;
615
616 Mutex::Autolock lock(mMutex);
617 mReqFormat = format;
618 return NO_ERROR;
619 }
620
setScalingMode(int mode)621 int Surface::setScalingMode(int mode)
622 {
623 ATRACE_CALL();
624 ALOGV("Surface::setScalingMode(%d)", mode);
625
626 switch (mode) {
627 case NATIVE_WINDOW_SCALING_MODE_FREEZE:
628 case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
629 case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
630 break;
631 default:
632 ALOGE("unknown scaling mode: %d", mode);
633 return BAD_VALUE;
634 }
635
636 Mutex::Autolock lock(mMutex);
637 mScalingMode = mode;
638 return NO_ERROR;
639 }
640
setBuffersTransform(int transform)641 int Surface::setBuffersTransform(int transform)
642 {
643 ATRACE_CALL();
644 ALOGV("Surface::setBuffersTransform");
645 Mutex::Autolock lock(mMutex);
646 mTransform = transform;
647 return NO_ERROR;
648 }
649
setBuffersTimestamp(int64_t timestamp)650 int Surface::setBuffersTimestamp(int64_t timestamp)
651 {
652 ALOGV("Surface::setBuffersTimestamp");
653 Mutex::Autolock lock(mMutex);
654 mTimestamp = timestamp;
655 return NO_ERROR;
656 }
657
freeAllBuffers()658 void Surface::freeAllBuffers() {
659 for (int i = 0; i < NUM_BUFFER_SLOTS; i++) {
660 mSlots[i].buffer = 0;
661 }
662 }
663
664 // ----------------------------------------------------------------------
665 // the lock/unlock APIs must be used from the same thread
666
copyBlt(const sp<GraphicBuffer> & dst,const sp<GraphicBuffer> & src,const Region & reg)667 static status_t copyBlt(
668 const sp<GraphicBuffer>& dst,
669 const sp<GraphicBuffer>& src,
670 const Region& reg)
671 {
672 // src and dst with, height and format must be identical. no verification
673 // is done here.
674 status_t err;
675 uint8_t const * src_bits = NULL;
676 err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
677 ALOGE_IF(err, "error locking src buffer %s", strerror(-err));
678
679 uint8_t* dst_bits = NULL;
680 err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
681 ALOGE_IF(err, "error locking dst buffer %s", strerror(-err));
682
683 Region::const_iterator head(reg.begin());
684 Region::const_iterator tail(reg.end());
685 if (head != tail && src_bits && dst_bits) {
686 const size_t bpp = bytesPerPixel(src->format);
687 const size_t dbpr = dst->stride * bpp;
688 const size_t sbpr = src->stride * bpp;
689
690 while (head != tail) {
691 const Rect& r(*head++);
692 ssize_t h = r.height();
693 if (h <= 0) continue;
694 size_t size = r.width() * bpp;
695 uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
696 uint8_t * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
697 if (dbpr==sbpr && size==sbpr) {
698 size *= h;
699 h = 1;
700 }
701 do {
702 memcpy(d, s, size);
703 d += dbpr;
704 s += sbpr;
705 } while (--h > 0);
706 }
707 }
708
709 if (src_bits)
710 src->unlock();
711
712 if (dst_bits)
713 dst->unlock();
714
715 return err;
716 }
717
718 // ----------------------------------------------------------------------------
719
lock(ANativeWindow_Buffer * outBuffer,ARect * inOutDirtyBounds)720 status_t Surface::lock(
721 ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
722 {
723 if (mLockedBuffer != 0) {
724 ALOGE("Surface::lock failed, already locked");
725 return INVALID_OPERATION;
726 }
727
728 if (!mConnectedToCpu) {
729 int err = Surface::connect(NATIVE_WINDOW_API_CPU);
730 if (err) {
731 return err;
732 }
733 // we're intending to do software rendering from this point
734 setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
735 }
736
737 ANativeWindowBuffer* out;
738 int fenceFd = -1;
739 status_t err = dequeueBuffer(&out, &fenceFd);
740 ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
741 if (err == NO_ERROR) {
742 sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
743 sp<Fence> fence(new Fence(fenceFd));
744
745 err = fence->waitForever("Surface::lock");
746 if (err != OK) {
747 ALOGE("Fence::wait failed (%s)", strerror(-err));
748 cancelBuffer(out, fenceFd);
749 return err;
750 }
751
752 const Rect bounds(backBuffer->width, backBuffer->height);
753
754 Region newDirtyRegion;
755 if (inOutDirtyBounds) {
756 newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
757 newDirtyRegion.andSelf(bounds);
758 } else {
759 newDirtyRegion.set(bounds);
760 }
761
762 // figure out if we can copy the frontbuffer back
763 const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
764 const bool canCopyBack = (frontBuffer != 0 &&
765 backBuffer->width == frontBuffer->width &&
766 backBuffer->height == frontBuffer->height &&
767 backBuffer->format == frontBuffer->format);
768
769 if (canCopyBack) {
770 // copy the area that is invalid and not repainted this round
771 const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
772 if (!copyback.isEmpty())
773 copyBlt(backBuffer, frontBuffer, copyback);
774 } else {
775 // if we can't copy-back anything, modify the user's dirty
776 // region to make sure they redraw the whole buffer
777 newDirtyRegion.set(bounds);
778 mDirtyRegion.clear();
779 Mutex::Autolock lock(mMutex);
780 for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
781 mSlots[i].dirtyRegion.clear();
782 }
783 }
784
785
786 { // scope for the lock
787 Mutex::Autolock lock(mMutex);
788 int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
789 if (backBufferSlot >= 0) {
790 Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
791 mDirtyRegion.subtract(dirtyRegion);
792 dirtyRegion = newDirtyRegion;
793 }
794 }
795
796 mDirtyRegion.orSelf(newDirtyRegion);
797 if (inOutDirtyBounds) {
798 *inOutDirtyBounds = newDirtyRegion.getBounds();
799 }
800
801 void* vaddr;
802 status_t res = backBuffer->lock(
803 GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
804 newDirtyRegion.bounds(), &vaddr);
805
806 ALOGW_IF(res, "failed locking buffer (handle = %p)",
807 backBuffer->handle);
808
809 if (res != 0) {
810 err = INVALID_OPERATION;
811 } else {
812 mLockedBuffer = backBuffer;
813 outBuffer->width = backBuffer->width;
814 outBuffer->height = backBuffer->height;
815 outBuffer->stride = backBuffer->stride;
816 outBuffer->format = backBuffer->format;
817 outBuffer->bits = vaddr;
818 }
819 }
820 return err;
821 }
822
unlockAndPost()823 status_t Surface::unlockAndPost()
824 {
825 if (mLockedBuffer == 0) {
826 ALOGE("Surface::unlockAndPost failed, no locked buffer");
827 return INVALID_OPERATION;
828 }
829
830 status_t err = mLockedBuffer->unlock();
831 ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
832
833 err = queueBuffer(mLockedBuffer.get(), -1);
834 ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
835 mLockedBuffer->handle, strerror(-err));
836
837 mPostedBuffer = mLockedBuffer;
838 mLockedBuffer = 0;
839 return err;
840 }
841
842 }; // namespace android
843